Monkey-wrench.



Patented Mar. 22, 1910.

P 0 POST MONKEY WRENCH. APPLICATION FILED JUNE 30, 1909.

PARLEY C. POST, OF MARSHALL, TEXAS.

MONKEY-WRENCH.

Application filed June 30, 1909.

To all whom 'it may concern:

Be it known that I, PARLEY C. Posr, a citizen of the United States, residing at Marshall, in the county of Harrison and State of Texas, have invented a new and useful h [onkey-l/Vrench, of which the following is a specification.

My invention has reference to wrenches, more particularly to such wrenches as are known as quick acting wrenches and is designed to provide a wrench of this type and character which will perform the functions for which the S wrench is designed and at the same time have all of the features of the monkey wrench.

Further objects of this invention are the elimination of all screws and springs which are so common in the wrenches now in use; the construction of a wrench which will be secure and strong in its operation, and will not give way when placed under a strain; and the provision of a wrench of this type which will have a movable jaw that will present a large tooth surface to the rack on the shank, consequently forming a strong and secure hold for the jaw.

With the above and other ends in view the invention consists in the construction, combination and arrangement of parts all as hereinafter more fully described, specifically claimed and illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of a wrench constructed in accordance with my invention. Fig. 2 is a similar view with parts in section, the plane of the section being indicated by the line 22 in Fig. 3. Fig. 3 is a transverse section taken along line 3-3 Fig. 2.

The main body portion of the wrench forming the subject matter of this invention, comprises a shank 1, having at its extremity the stationary head 2 and along one face the toothed rack 3, the teeth thereof sloping toward the head. Extending longitudinally along each of two opposed faces of the said shank is the groove 1, so placed to increase the steadiness of the movement of the slidable jaw. This slidable jaw comprises a U shaped member, having the arms 6, between which there is interposed and secured by the rivets 7, a'bar 8, the inner surface of which is formed with a series of projecting teeth 9, which engage the similar members on the rack 3. A wedge shaped passage 11 is formed on the opposite side of this slidable Specification of Letters Patent.

Serial No. 595,243.

jaw, and reciprocating therein is a wedge shaped key 10, formed with one face flush and parallel to the surface of the shank, and the opposite face tapering to conform with the slope of the passage 11. Approximately parallel to this sloping face, a longitudinally extending slot or passage 12 is formed in the key and a transverse pin 13, carried by the sliding jaw, passes through the said passage. At the outer extremity of the key is provided a pair of upwardly formed arms 14, the extremities of which are curved inwardly to provide guides which are received in the grooves 1 located on the vertical sides of the shank, thus forming not only a guide for the slidable jaw, but facilitating the movement of the key. The operation of this key is further facilitated by the handle 15 located at the extreme outer end thereof, the inner contour of which corresponds to that of the finger of the operator.

Permanently and rigidly secured to the extremity of the shank opposite to that on which is carried the stationary head 2, is an obliquely disposed handle 16, so located that it will provide a means whereby the functions of the S wrench may be obtained and at the same time all the features of a quick acting monkey wrench may be had. The key 10 may be removed at will from the shank upon the dislodgment of the transverse pin 13.

From the foregoing it will be readily seen that upon forcing the wedge in the passage 11, the teeth on the bar 8 are brought into operative engagement with the like members on the rack 3, thus securing the head in any desired position upon the shank and making it applicable to a large range of sizes; furthermore, the provision of a handle 16 at an angle to the shank makes it possible to operate the wrench in most places where previously the S wrench was employed, permitting the gripping of the handle when the wrench is flush with a wall or similar obstruction.

Having thus fully described my invention what I claim as new and desire to secure by U. S. Letters Patent is:

.1. In a wrench, the combination with a longitudinally grooved shank carrying at one extremity a stationary head, of a movable jaw having an inwardly toothed face and a wedge shaped passage in its opposite face, a transverse pin in said passage, a

wedge shaped key adapted to reciprocate 1n Patented Mar. 22, 1910. x

said passage and having a longitudinal slot therein adapted to receive the said pin, and provided with inwardly curvedarms reciprocating in the longitudinal grooves of the shank.

2.111 a wrench, the combination With a longitudinally grooved toothed shank, of a slidable jaw mounted on said shank having the inner surface of one face toothed and a wedge shaped passage opposite said face, a transverse pin in said passage, a wedge shaped key having a longitudinally extend- I i-ng slot adapted to receive the said transverse pin and curved arms reciprocating in the longitudinal grooves of the shank, and manually operative means for operating the said wedge shaped key.

In testimony that I claim the foregoing as my own, I have hereto affixed my sig nature in the presence of two Witnesses.

PARLEY G. POST. .Vitnesses lV. C. MERRELL, H. E. Lewis.

provided with inwardly 

